Large commercial hot water heat exchanger leaking

I'm the property guy for the church. We sprung a leak in one of the
large heat exchangers in one of the building air handlers. It is fed
by a gas fired hot water boiler. The local mechanical contractor came
by to look it over today, and pronounced it dead. They said the leak
can't be repaired. To make matters worse, the 1960's vintage air
handler is somewhat built into the building in a small mechanical
room, so they will have to dismantle the unit, and take out the
refrigerant coil to get to the heat coil. Yeah, lots of labor cost
coming our way on a tight budget. Any suggestions on an easier fix or
saving some money - besides telling the congregation to wear their
coats all winter?

Sorry;
Looks like you all are going to have to have a lot of cake sales to make up
that cost. Your congregation should have thought about the replacement
while the unit was up to snuff all those years. If you would have "put"
some of those plate offerings away for a rainy day, you'd be ahead of it.

Louie,
C'mon. Enough is enough. Its time to break the church piggy bank open
and spend some bucks. Do a little planning. Get something efficient
and make sure it fits easily in the room this time. Make it accessable
and serviceable. Done correctly, you might find that it will pay for
it self in fuel savings in a very short time.
Otherwise, I hear bubble gum and duct tape work wonders.
Bubba

Update: I got a quote for fabricating a new hot water coil $1,500.
Now I need to get it installed. I think this can be done by
dismantling the top of the large air handler (remove the motor and two
blowers) and then lift the old hot water coil out and over the
refrigerant coil - the goal is not to have to disturb the refrigerant
coil. Labor will be steep...

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